| 2261377 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 156 / 640 |
Estimated T-Level: 26.2 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-10 | Oliver Kruse | 1DB8DCE8DB3AD277 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | 2485DB0A6BD77818 | 3 | 2159651 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | 2485DB0A6BD77818 | 3 | 1766832 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2261377/36182033/393479599/196006021540581813007 : 2485DB0A6BD77818 | | 2017-10-18 | Oliver Kruse | C-PRP | M2261377/36182033/393479599/196006021540581813007 : 2485DB0A6BD77818 | | 2017-10-10 | Oliver Kruse | C-PRP | M2261377/known_factors : 1DB8DCE8DB3AD277 | | 2016-04-17 | alpertron | F-PM1 | Factor: 196006021540581813007 / B1=500000, B2=15000000 | | 2008-07-14 | George Woltman | F-ECM | Factor: 393479599 |
|
